108-89-4
4-甲基吡啶
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4072-67-7
4,4’-二(2-溴乙酰基)联苯
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19035-84-8
2-(4-methylpyridin-1-ium-1-yl)-1-[4-[4-[2-(4-methylpyridin-1-ium-1-yl)acetyl]phenyl]phenyl]ethanone,dibromide